import type { SQLiteError } from "bun:sqlite"

import { fail, redirect } from '@sveltejs/kit';

import { toInt, parseDate, isTimeValidHHMM } from "$lib/util"
import { get_user, User } from "$lib/server/database";

export async function load({ locals }) {
	return {
		records: locals.user.get_entries()
	};
}

export const actions = {
	new_entry: async ({locals, request}) => {
		
		const ok = "ok";
		const missing = "missing";
		const invalid = "invalid";
		
		const data = await request.formData();
		
		let date = data.get("date");
		let start = data.get("start");
		let end = data.get("end");
		let comment = data.get("comment");
		
		let return_obj = {
			date : {
				status: ok,
				value: date
			},
			start : {
				status: ok,
				value: start
			},
			end : {
				status: ok,
				value: end
			},
			comment : {
				status: ok,
				value: comment
			},
		}

		if (date == null) {
			return_obj.date.status = missing;
		} else if (parseDate(date) == null) {
			return_obj.date.status = invalid;
		}

		if (start == null) {
			return_obj.start.status = missing;
		} else if (!isTimeValidHHMM(start)) {
			return_obj.start.status = invalid;
		}
		
		if (end == null) {
			return_obj.end.status = missing;
		} else if (!isTimeValidHHMM(end)) {
			return_obj.end.status = invalid;
		}

		console.log(return_obj);

		if (Object.keys(return_obj).some((v) => { return return_obj[v].status != ok; })) {
			return fail(400, { new_entry: return_obj });
		}

		let res = locals.user.insert_entry(date, start, end, comment);	

		if (!res) {
			return fail(500, { })
		}

		return { new_entry: { success: true } };
	},
	edit_entry: async ({locals, request}) => {
		
		const ok = "ok";
		const missing = "missing";
		const invalid = "invalid";
		
		const data = await request.formData();
		
		let id = data.get("id");
		let date = data.get("date");
		let start = data.get("start");
		let end = data.get("end");
		let comment = data.get("comment");
		
		let return_obj = {
			id: {
				status: ok,
				value: id,
			},
			date : {
				status: ok,
				value: date
			},
			start : {
				status: ok,
				value: start
			},
			end : {
				status: ok,
				value: end
			},
			comment : {
				status: ok,
				value: comment
			},

		}

		if (id == null) {
			return_obj.id.status = missing;
		} else if (isNaN(toInt(id))) {
			return_obj.id.status = invalid;
		}

		if (date == null) {
			return_obj.date.status = missing;
		} else if (parseDate(date) == null) {
			return_obj.date.status = invalid;
		}

		if (start == null) {
			return_obj.start.status = missing;
		} else if (!isTimeValidHHMM(start)) {
			return_obj.start.status = invalid;
		}
		
		if (end == null) {
			return_obj.end.status = missing;
		} else if (!isTimeValidHHMM(end)) {
			return_obj.end.status = invalid;
		}
		
		if (Object.keys(return_obj).some((v) => { return return_obj[v].status != ok; })) {
			return fail(400, { edit_entry: return_obj });
		}

		let current = locals.user.get_entry(id);

		if (!current) {
			return fail(404, { new_entry: return_obj });
		}
		
		if (current.id == id && current.date == date && current.start == start && current.end == end && current.comment == comment) {
			return { success: false, edit_entry: { return_obj } }
		}
		
		let res = false;

		try {
			res = locals.user.update_entry(id, date, start, end, comment);	
		} catch (e) {
			if (!(e instanceof SQLiteError)) {
				throw e;
			}
		}

		if (!res) {
			return fail(500, { })
		}
		
		redirect(303, '/');
		return { success: true };
	},
}